Thomas peat



(No Model.)

-T. PEAT. Belt ShiftingMeohanis-m. No. 234,802. Patented Nov. 23,1880;

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UNITED STATES THOMAS PEAT, OF YOUNGSTOWN, OHIO,-ASS1GNOR OF ONE-HALF TOJOSEPHUS U. BRENEMAN, OF SAME PLACE.

BELT-SHIFTING MECHANISM.

SPECIFICATION formingpart of Letters Patent No. 234,802, dated November23, 1880. 7

Application filed October 13, 1880.

To all whom it may concern Be it known that I, THOMAS PEAT, a citizen ofthe United States, residing at Youngstown, in the county of Mahoning andState of Ohio, have invented new and useful Improvements inBelt-Shifting Mechanism, of which the following is a specification.

My invention relates to improvements in mechanism for shifting beltswherein an open and a crossed belt are used for obtaining a motion ofthe driving-pulley in either direction by a single shifting hand-lever,and in which one belt may be shifted without moving or interfering withthe other belt.

The objects of the invention are to improve the construction of theshipper mechanism, whereby the movements of the belt-guides can beregulated to suit different widths of belts.

Two belt-guides are used with separate parallel slides, and a pivotedvibrating segment engages, by means of pins at each end of the arc, withadjustable catches on the corresponding ends of the slides, while thehand-lever is arranged at the other end of the slides, and is adjustablyconnected to said segment in such manner that the relation of theconnectingrod with the pivoted arm of the segment will always give aneasy movement to the handlever when its connecting-rod is out ofparallel with the slide-bars. Adjustable collars on the slide-barsserve, in connection with one of the hangers by which they aresupported, to regulate and determine the movements ofthe slides to suitnarrower belts and pulleys, and by means of these adjustable collarseither of said slide-bars may be locked to its hangers so that it cannotbe moved,while the other can be moved its full distance, and thus adaptthe shifter for a single as well as two drivingbelts.

Referring to the accompanying drawings, Figure 1 represents an elevationof the shifting mechanism as applied to the ceiling of the shop andadjusted with both belts upon the loose pulleys; Fig. 2, a similar view,showing the parts in the positions they occupy when one of the belts isshifted upon the drivingpulley, and Fig. 3 an under-sideview of thesame.

The shipper bars or slides a a, I prefer to (No model.)

make of metal, squarein cross-section, and they are mounted, in hangersb 1), parallel to each other, quite near together and to the pulleys.They are sufficiently longer than the width of the nest of pulleys toallow of their connection beyond one end of the pulleys with a vibratingsegment, A, by which they are operated. The segment is pivoted to theceiling or to hangers by an arm, 0, and carries at each end of its are apin, o c, standing out horizontally from opposite sides thereof, so asto operate within the slots of catches (Z 01, secured in verticalpositions upon the slides on opposite sides of the hanger b, the segmentfor this purpose occupying a position between the catches and verticallyover the space between the slides, which are operated therebyindependently of each other. The catches have angular eyes, by whichthey are adjustably secured by screws (1 (1 so that they can be set tosuit the full throw of the hand-lever for wide pulleys. Each catch has asegmental extension, d W, at one side of its slot, by which it is alwayskept in proper relation to the segment-pin.

The belt-guides e e are secured upon the slides in position to shift thebelts from the loose pulleys ff onto the fast pulley g, and vice versa,as may be required. For narrower pulleys and belts the throw of theslides is regulated by stop-collars h it, one upon each bar and arrangedthereon on opposite sides of the hanger b, in relation to which oneorboth collars can be adjusted, as may be desired, nearer to the hanger.

The operating hand-lever i is arranged at the ends of the slidesopposite to those connecting with the vibrating segment, to the arm o ofwhich it is connected by a rod, j, ata point between the segment and itspivot, by a crank, 70, secured within a slot, 1, in said arm 0 byset-screw it, so that said crank can be adjusted nearer to or furtherfrom the seg ment-pivot to regulate and determine the extent of themovement of the hand-lever. The adjustment of the crank nearestthe pivotwill require much less movement of the hand-lever to move the slides acertain distance than would be required to move them the same distanceby the adjustment of the crank in the slot farthest from said pivot, andthis is important in some cases where a long sweep of the hand-leverwould be inconvenient; but the crank has also an adjustment in the arcof a circle upon its set-screw k, for a purpose that will be presentlystated.

The hand-lever is pivoted to the ceiling, and generally at a point muchhigher than the pivot of the segment, and in such case theconnecting-rod, being attached to the lever near its pivot, would beoblique to the slides and out of a right-angled relation to thesegment-arm, as shown in Fig. 1, which would cause the hand-lever towork harder than if its relation were at right angles to said arm, asshown by dotted lines. For this purpose the crank is adjusted out ofline with said arm, so that the action of the connecting-rod will be atright angles to a line drawn from the pivot of the segment-arm, and thusgive a better and freer movement to the segment. In the position of thesegment and crank shown in Fig. 1 it will be seen that should thehandlever be pushed to one extreme the pivot z of the crank wouldoperate the same distance on one side of the line m m as it would ifpushed to the other extreme, and thus the crank gives the advantage of aright-angled relation of the rod and segment, whether said rod occupy aposition parallel with the slides or oblique thereto, and for thispurpose the crank can be turned to either side out of line with thesegment-arm or in line with it, as occasion may require, and whenadjusted it is clamped secure by the set-screw.

In the adjustment of the catches and the width of the pulleys shown thestops it h are not necessary; but for narrower belts and pulleys theytake the place of the catches in limiting the throw of theslides orshipperbars. The guides are made to suit the width of the belts.

The device can be used as well on a countershaft attached to the floor,in which case the positions of the parts would be reversed.

In the throw of the slide-bar a to carry the guide 0 and its belt fromthe loose to the fast pulley, the inside catch, (1, or the outsidecollar, h, will act as a stop to limit such movement; but in reversingthis throw to put the belt back on the loose pulley, a pin, a", on saidslide-bar, acting against the inner side of the hanger 1), serves asastop tolimit such movement. In like manner the throw of the slidebar a,is limited in both directions by the outside catch, d, the insidecollar, h, and the pin 8, the latter acting against the outside of thehanger b. The collars therefore only act to limit the throw of theslides to shift the belts from the loose to the fast pulley. Thearrangement ot' the catches on opposite sides of the hanger I) gives theimportant advantage of forming stops to limit the movement of theslide-bars, as shown in Figs. 1 and 2, while in Fig. 3 the stop h isshown by dotted lines in its adjustment upon the slide-bar a and inrelation to the pin 8 to lock said bar to the hanger b, so that itcannot be moved.

I claim- 1. In a belt-shifter, the combination of two parallel slides orshipper-bars, a a, provided with slotted catches d d and belt-guides ee, substantially as described, with the vibrating segment provided withpins 0 c at each end of the are, operating in said catches, and ahand-lever, 1', connected with the arm a of said segment at a pointbetween the arc of the segment and the pivot upon which it vibrates,substantially as and for the purpose set forth.

2. The combination, in a belt-shifter, of the parallel slides orshipper-bars a a, provided with slotted catches d d and belt-guides e e,and the vibrating segment having pins 0 0, operating in said catches,with the adjustable stops it 72/, arranged on said slide-bars inrelation to one of the hangers, b, thereof, sub stantially as and forthe purpose set forth.

3. lna belt-shifter, the combination of the parallel slides orshipper-bars a a, provided with the slotted catches (Z d and belt-guidese e, and the slotted vibrating segment having pins 0 0, operating insaid catches, with the hand-lever 2', its connecting-rod j, and theadjustable crank-connection 7c of said rod with the slotted arm 0 ofsaid vibrating segment, substantially as and for the purpose described.

4. The combination, in a belt-shifter, of the vibrating segment providedwith pins 0 c at each end of the arc, and the parallel beltguide,slides, or shipper-bars a a, provided with slotted catches d d, operatedby said segment-pins, with the hanger b for said slides, said catchesbeing arranged thereon on opposite sides of said hanger, substantiallyas and for the purpose set forth.

5. The combination, in a belt-shifter, of the parallel slides orshipper-bars. a a, the slotted catches d d thereon, and the vibratingsegment-pins c 0, operating in said catches, substantially as set forth,the said slides being provided with the adjustable and fixed stops it h4" s, acting on opposite sides of the hanger 11, substantially as andfor the purpose set forth.

6. The belt-shifter herein described, consisting of the parallel slidesor shipper-bars a a, provided with the slotted catches d d, thebelt-guides e e, the slide-bar supports b b, and the adjustable andfixed stops h h r s, the slotted vibrating segment provided with thepins 0 e, the hand-lever i, adjustably connected with the arm 0 of saidsegment by the rod j, and the crank it, all constructed and adapted foroperation as a single or double belt shifter, substantially asdescribed.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

THOMAS PEAT.

Witnesses:

W. N. ASHBAUGH, THos. O. GILCHRIST.

